Paper-II
Section A

Answer any four of the following:

The normal boiling point of benzene (C6H6) is 80.1 oC and its latent heat of vaporization is 33.655 kJ/mol. Estimate the vapour pressure of benzene at 45 oC

Prove that two reversible, adiabatic lines cannot intersect

Prove that

For an ideal batch reactor, derive an expression to determine the time required to achieve a desired conversion

Compare the size of plug flow and mixed flow reactors for first and second order reactions

Ethane (C2H6) is initially mixed with oxygen to obtain a mixture of 80% ethane by volume. His mixture is burned in an engine with 200% excess air. During combustion 80% of ethane burns to CO2 10% of ethane burns to CO and 10% of ethane remains unburned. Determine the composition of the exhaust gas on dry basis.

For a particular binary system the activity coefficients are adequately represented by ln a3 0.5 × 2 and ln 2a3 0.5 × 21. The saturation pressure of the components at 800C are P1 S 900 toor and P 2 S 600 torr torr 1 mm Hg column). Is it possible for the system to exhibit azeotropy at 800C? If so, what is the azotropic composition

Equal volumetric flow rates of A and B streams are fed to the reactor and each stream has a concentration of 20 mol/liter of reactant. Or 90% conversion of calculate the concentration of R in the product stream on

a plug flow reactor

a mixed flow reactor

Section B

Answer any four of the following:

Name the principal varnish resins and describe, in brief, the method of production of varnish

Describe the production of penicillin by fermentation

Explain the terms: Deflagration and Detonation, and distinguish between them

With the help of neat sketches, describe adiabatic lapse rate and its effect on different types of plume behaviour

Discuss the factors which must be considered in the design of activated sludge system

Present a neat flow diagram and describe the method of production of sucrose from sugarcane. Discuss the major engineering problems associated with the production of sucrose from sugarcane

A proposed manufacturing plant requires an initial fixed capital investment of Rs. 5 crores and a working capital of Rs. 1 crore. It is expected that the annual income will be Rs. 4 crores and the annual expenses including depreciation will be Rs. 1.2 crores, before taxes. A minimum annual return of 25 per cent before income taxes is required. Income tax amount to 40 per cent of all pretax profits. Determine the annual per cent return on the total initial investment after income taxes, and the annual per cent return on the average investment before income taxes, assuming straight line depreciation and zero salvage value

Answer the following questions

Develop mass balance equations for the food and biomass in a typical activated sludge system

Define BOD and COD, and explain the methods of controlling BOD and COD in tannery effluents